%0 Journal Article
%A Van Velzen, G. A.
%A Ernst, M. H.
%A Brito López, Ricardo
%T Stress stress correlation-functions in lattice gases beyond Boltzmann approximation
%D 1993
%@ 0022-4715
%U https://hdl.handle.net/20.500.14352/58605
%X The complete time dependence of the stress-stress correlation functions in lattice gas cellular automata is calculated from the ring kinetic theory using numerical and analytical methods. This provides corrections, typically of 10-20%, to the usual molecular chaos calculations, where correlation functions decay exponentially. The resulting correlation function crosses over from an initial exponential decay to the long-time behavior calculated from mode coupling theory. The present theory, applied to the viscosity, accounts for a substantial part of the observed difference between the Boltzmann theory and simulations.
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